Electrochemical studies of mild steel corrosion inhibition in sulfuric acid chloride by aniline

被引：18
|
作者：
Loto, R. T. [1 ]
Loto, C. A. [1 ,2 ]
Fedotova, T. [1 ]
机构：
[1] Tshwane Univ Technol, Dept Chem & Met Engn, Pretoria, South Africa
[2] Covenant Univ, Dept Mech Engn, Ota, Nigeria
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2014年 / 40卷 / 04期
关键词：
Aniline; Hydrochloric acid; Langmuir; Corrosion; COPPER CORROSION; HYDROGEN PERMEATION; MOLECULAR-STRUCTURE; SUBSTITUTED BENZOTHIAZOLES; QUANTUM-CHEMISTRY; SCHIFF-BASES; DERIVATIVES; ADSORPTION; IRON; HCL;
D O I：
10.1007/s11164-013-1055-x
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The corrosion behavior of mild steel in dilute hydrochloric acid under the inhibiting action of various concentrations of aniline was studied using the weight loss and linear polarization resistance technique. The efficiency of the inhibitor increased with the increase in the inhibitor concentration. The results obtained reveal that aniline performed effectively as a corrosion inhibitor. The adsorption mechanism indicates mixed molecular interaction from values of Gibbs free energy. The values of the inhibition efficiency calculated from the two techniques are in reasonably good agreement. The adsorption of the inhibiting compound was found to obey Langmuir, Frumkin and Freudlich adsorption isotherms. The mechanism of inhibition was discussed in the light of the chemical structure of the inhibiting compound and their adsorption on steel surfaces in relation to the potentiodynamic parameters.
引用
收藏
页码：1501 / 1516
页数：16
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